How to resume track on playlist1 after playlists changed ?

I got 2 playlists in my sansa clip+. For example, in playlist*1 i’ve listened to track#50/500. Then i listened to playlist*2. I wanna listen back playlist*1. How can i resume listen track#50/500 ? Not start back the playlist at track#1/500

foot note: I’m using rockbox on clip+

As far as I know, you can’t. There isn’t a ‘resume’ feature on playlists. I don’t believe Rockbox offers this either.